11023011220 has 48 divisors (see below), whose sum is σ = 24936807168. Its totient is φ = 4068754560.

The previous prime is 11023011203. The next prime is 11023011229. The reversal of 11023011220 is 2211032011.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 11023011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11023011229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1354965 + ... + 1363075.

It is an arithmetic number, because the mean of its divisors is an integer number (519516816).

Almost surely, 2^11023011220 is an apocalyptic number.

11023011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11023011220 is an abundant number, since it is smaller than the sum of its proper divisors (13913795948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11023011220 is a wasteful number, since it uses less digits than its factorization.

11023011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13360 (or 13358 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11023011220 its reverse (2211032011), we get a palindrome (13234043231).

The spelling of 11023011220 in words is "eleven billion, twenty-three million, eleven thousand, two hundred twenty".